input取消浏览器保存的值

取消浏览器保存的值关键在于autocomplete熟悉，type=text的时候，autocomplete="off"。type=password的时候，autocomplete="new-password"。

<div class="form-group">
    <label for="userName" class="col-sm-2 control-label labelIpt">用户名称</label>
    <div class="col-sm-10">
        <input type="text" class="form-control" id="userName" placeholder="请输入用户名称" value="" autocomplete="off">
    </div>
</div>
<div class="form-group">
    <label for="userPassword" class="col-sm-2 control-label labelIpt">用户密码</label>
    <div class="col-sm-10">
        <input type="password" class="form-control" id="userPassword" placeholder="请输入用户密码" value="" autocomplete="new-password">
    </div>
</div>